Preparation and Property of Y-Mg-Al-Layered Double Oxides

Abstract

Y-Mg-Al-layered double Oxides (Y-Mg-Al-LDO) were prepared by calcining Y3+-doped Mg-Al-layered hydrotalcites at 823 K for 8 h from co-precipitation method. The samples were detected by XRD and CO2-TPD. Micro-structure and essential regularity were disclosed. The acetone condensation reaction as a probe reaction was carried on fixed-bed micro-reactor at reactive temperature 673 K, reactive time 3 h and liquid hourly space velocity (LHSV) 6 h-1 over Y-Mg-Al-LDO. The catalyst evaluation results show that Y-Mg-Al-LDO possess high catalytic activity. The maximum value of acetone conversion reached 37.53%. The selectivity and single-pass-yield of isophorone were 55.66% and 20.89%, respectively.